27159397 has 2 divisors, whose sum is σ = 27159398. Its totient is φ = 27159396.

The previous prime is 27159383. The next prime is 27159401. The reversal of 27159397 is 79395172.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19793601 + 7365796 = 4449^2 + 2714^2 .

It is a cyclic number.

It is not a de Polignac number, because 27159397 - 2¹⁹ = 26635109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27159337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13579698 + 13579699.

It is an arithmetic number, because the mean of its divisors is an integer number (13579699).

Almost surely, 2^27159397 is an apocalyptic number.

It is an amenable number.

27159397 is a deficient number, since it is larger than the sum of its proper divisors (1).

27159397 is an equidigital number, since it uses as much as digits as its factorization.

27159397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 119070, while the sum is 43.

The square root of 27159397 is about 5211.4678354567. The cubic root of 27159397 is about 300.5892013077.

It can be divided in two parts, 27159 and 397, that added together give a square (27556 = 166²).

The spelling of 27159397 in words is "twenty-seven million, one hundred fifty-nine thousand, three hundred ninety-seven".